Service complaint

I have no words to explain the frustration,disappointment and disgust i have in the service that i have received from MTN. All i needed to do was to cancel my contract thats expired. I cannot count the amount of calls that i have made to their call centre where i have had to wait a while only for the call to be ended. The first time i spoke to an agent i was told i could not cancel the contract until the debit order goes off which Im later told is not true. That now means i will be debited again an amount which could have been avoided had the agent proceeded with my request. I hope MTN listens to the recordings of our conversations we have with their agents just so they can realise that they are actually running a circus. I will not have anything to do with this company anymore and i cant wait to cancel my other contract.